WO2014030425A1 - 電子顕微鏡及び試料移動装置 - Google Patents
電子顕微鏡及び試料移動装置 Download PDFInfo
- Publication number
- WO2014030425A1 WO2014030425A1 PCT/JP2013/067430 JP2013067430W WO2014030425A1 WO 2014030425 A1 WO2014030425 A1 WO 2014030425A1 JP 2013067430 W JP2013067430 W JP 2013067430W WO 2014030425 A1 WO2014030425 A1 WO 2014030425A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sample
- sample holder
- holder
- electron microscope
- longitudinal direction
- Prior art date
Links
- 238000007789 sealing Methods 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 239000002245 particle Substances 0.000 description 5
- 229910052594 sapphire Inorganic materials 0.000 description 3
- 239000010980 sapphire Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/02—Details
- H01J37/20—Means for supporting or positioning the object or the material; Means for adjusting diaphragms or lenses associated with the support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/02—Details
- H01J37/18—Vacuum locks ; Means for obtaining or maintaining the desired pressure within the vessel
- H01J37/185—Means for transferring objects between different enclosures of different pressure or atmosphere
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/26—Electron or ion microscopes; Electron or ion diffraction tubes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/20—Positioning, supporting, modifying or maintaining the physical state of objects being observed or treated
- H01J2237/2005—Seal mechanisms
- H01J2237/2006—Vacuum seals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/20—Positioning, supporting, modifying or maintaining the physical state of objects being observed or treated
- H01J2237/204—Means for introducing and/or outputting objects
Definitions
- the present invention relates to a charged particle beam apparatus and a sample moving apparatus, and more particularly to a sample fine movement stage for taking an image with reduced sample drift, high throughput and less image distortion.
- Observation using a charged particle beam apparatus particularly a transmission electron microscope (TEM)
- TEM transmission electron microscope
- the observation sample is thinned to the order of several tens of nanometers with a focused ion beam apparatus or the like and mounted on the sample stage.
- the sample stage is attached to the sample holder and introduced into the mirror body evacuated to about 10 ⁇ 5 Pa through a preliminary exhaust chamber (air lock chamber) incorporated in the sample moving device.
- the sample moving device is driven in three axial directions when the vertical direction is defined as an X axis and a Y axis in a plane perpendicular to the Z axis.
- the sample is driven in the rotation directions (the ⁇ direction and the ⁇ direction, respectively) about the X axis and the Y axis.
- the X axis is usually defined as the longitudinal direction of the sample holder, and the Y direction is normally defined as the direction perpendicular to the X and Z axes.
- a driving mechanism that can move by several nanometers with respect to each axis is selected.
- a method of driving in the X direction by bringing the tip of the sample holder into contact is devised as described in Patent Document 1. Further, as described in Patent Document 2, a method has been devised in which a step is provided in a part of the sample holder and the step is brought into contact with the X-axis drive mechanism.
- the drive mechanism of each axis In order to determine the sample observation position for the drift factor, the drive mechanism of each axis is operated, but after the drive mechanism is stopped due to the backlash of the gear of the drive mechanism or the deformation of the drive mechanism itself, The sample drift phenomenon that moves will occur.
- the O-ring provided in the sample holder always rubs against the vacuum seal surface, and the O-ring is elastically deformed by the frictional force. This release of the elastic force causes the sample drift.
- An electron microscope in which a sample holder is inserted into a mirror body, the O-ring sealing the electron microscope mirror body and the sample holder, and a slider that slides in the longitudinal direction of the sample holder and positions the sample holder in the longitudinal direction
- An electron microscope comprising a sample moving device provided with an elastic body for connecting the two.
- Sample moving apparatus of the present invention Sample moving apparatus of the present invention Sample moving apparatus of the present invention Sample moving apparatus of the present invention O-ring shape provided in the sample holder Sample holder movement when removing O-ring distortion Example of holder abutting part Example of holder abutting part
- FIG. 1 is a cross-sectional view of a sample moving device of the present invention.
- a slider cylinder 30 is fastened to the body 1 of the electron microscope via a bellows 32.
- the slider cylinder 30 and the holder abutting portion 40 are fixed by an elastic body 31.
- the X driving linear mechanism 10 fixed to the mirror body 1 is operated.
- the O-ring 4 provided in the sample holder 2 slides on the inner wall of the slider cylinder 30 and is positioned in the longitudinal direction by the holder abutting portion 40.
- the slid O-ring 4 is deformed and causes a sample drift.
- the sample holder is pushed in the minus direction in the X direction in FIG. 1, and the position pushed back by the spring force of the elastic body 31 is defined as the final holder position.
- the spherical receiver 36 fixed to the mirror body 1 is in contact with the spherical fulcrum 37.
- the air lock cylinder including the spherical fulcrum 37 swings around the center of the spherical fulcrum 37, and as a result, the sample 3 can be moved in the Z direction (vertical direction) and the Y direction (perpendicular to the paper surface). It becomes possible.
- the Z driving linear mechanism 21 fixed to the rotating cylinder 20 is operated.
- the Z driving linear mechanism 21 always receives a repulsive force by the Z spring 22 positioned at the counter electrode.
- the sample holder 2 is driven in the Y direction by another linear mechanism that can be driven in a direction perpendicular to the paper surface (not shown).
- the X drive linear mechanism 10 is attached to a rotating cylinder 20 that is fastened to a base 24 via a bearing 23.
- the driving force of the X driving linear mechanism 10 is transmitted to the slider cylinder 30 by a lever mechanism 25 which is a fulcrum provided on the rotating cylinder, and drives the sample holder 2 in the X direction.
- the slider cylinder is connected to the inner cylinder 33 by a bellows.
- the contact portion between the lever mechanism 25 and the slider cylinder 30 requires a sliding mechanism for the Z-axis and Y-axis drive of the sample holder.
- the X fine movement mechanism is installed on the rotating cylinder 20, but a similar mechanism may be installed on the outer cylinder 38. In that case, since the X drive mechanism moves integrally with the Z-axis and Y-axis drive, the sliding mechanism is not necessary.
- the following can be considered as a technique for removing the distortion of the O-ring.
- the distorted O-ring is moved in the direction of the arrow x in FIG. 3 and fixed in a state where the strain amount is zero.
- the elastic force due to the strain of the O-ring is isotropically generated in a direction perpendicular to the longitudinal axis of the holder, and thus an elastic force that causes sample drift does not work.
- the holder abutting portion and the slider cylinder move relatively away from each other while the holder abutting portion and the holder are in contact with each other.
- the holder and the slider cylinder are relatively displaced, and the distortion of the O-ring is released.
- the elastic body 31 needs to have a sufficient spring multiplier so as to resist the force with which the sample holder is pulled into the lens body by atmospheric pressure.
- the protrusion 50 is provided once on the slider cylinder 30.
- the elastic body 31 acts to press the holder abutting portion 40 against the protrusion 50. By doing so, it is possible to always match the position where the holder is finally positioned with respect to the slider cylinder.
- the protrusion 50 is preferably made to be in point contact with the holder abutting portion, and a material such as sapphire is preferably used to maintain rigidity.
- FIG. 7 Another embodiment is shown in FIG.
- the holder butting portion is installed on the atmosphere side, and the holder butting portion is fastened through the elastic body 31.
- the elastic body 31 acts to press against a stopper integral with the slider cylinder 30.
- the abutting part itself may be an elastic body.
- the elastic body shown in FIG. 1 may be an actuator that makes the positional relationship between the abutting portion 40 and the slider cylinder 30 variable.
- the actuator include a linear actuator and an ultrasonic motor.
- the sample holder 2 is fixed in a direction perpendicular to the longitudinal direction of the holder by a member provided on a spherical fulcrum 37 fixed to the distal end of the outer cylinder 38 in the X direction minus side. As the member, sapphire having high wear resistance is used. It is desirable to fix the sample holder 2 using three or more members.
- the rear end of the holder X direction plus direction is also fixed in the same manner by a member provided in the outer cylinder 38.
- the contact point between the holder abutting portion 40 and the holder is preferably point-contacted with a hemispherical sapphire from the viewpoint of thermal insulation of the holder 2.
- the contact point is preferably one or more.
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
Description
試料ホルダを鏡体1に導入し、最終位置に位置決めされた後に、試料ホルダを図1中のX方向マイナス側に押し込んだ後、弾性体31のバネ力で押し戻された位置を最終ホルダ位置とすることで、Oリング変形を緩和する。
〔ホルダ固定方向〕試料ホルダ2は外筒38のX方向マイナス側先端に固定された球形支点37に備えられた部材でホルダ長手方向と垂直方向に固定される。部材は高耐摩耗性を有するサファイヤが用いられる。部材は3点以上を用いて試料ホルダ2を固定することが望ましい。ホルダX方向プラス方向後端も外筒38に備えられた部材にて同様の方法で固定する。
Claims (7)
- 試料ホルダが鏡体に挿入される電子顕微鏡であって、
前記電子顕微鏡の鏡体と前記試料ホルダを気密するOリングと、前記試料ホルダの長手方向にスライドし試料ホルダを長手方向に位置決めするスライダ筒と、前記スライダ筒と鏡体を気密するベローズと、スライダ筒を試料ホルダ長手方向に駆動する手段と、試料ホルダを長手方向に位置決めする突き当て部材を備え、前記突き当て部材と前記スライダ筒を接続する弾性体を備えた試料移動装置を備えることを特徴とする電子顕微鏡。 - 請求項1の電子顕微鏡において、
前記試料ホルダを当該試料ホルダが挿入される方向に減衰振動するように駆動する駆動機構を備えたことを特徴とする電子顕微鏡。 - 請求項1の電子顕微鏡において、
前記Oリングの歪みを除去する位置まで試料ホルダを戻し、前記Oリングの歪みがなくなる位置で前記試料ホルダを固定する固定部材を備えたことを特徴とする電子顕微鏡。 - 請求項1の電子顕微鏡において、
前記スライダ筒の先端に突起を備え、前記突起が前記突き当て部材に押し当てられることを特徴とする電子顕微鏡。 - 請求項1の電子顕微鏡において、
前記突き当て部材は大気圧側に配置されていることを特徴とする電子顕微鏡。 - 電子顕微鏡の試料移動装置であって、試料が搭載される試料ホルダを気密するOリングと、前記試料ホルダの長手方向にスライドし試料ホルダを長手方向に位置決めするスライダ筒と、前記スライダ筒と鏡体を気密するベローズと、スライダ筒を試料ホルダ長手方向に駆動する手段と、試料ホルダを長手方向に位置決めする突き当て部材を備え、前記突き当て部材と前記スライダ筒を接続する弾性体を備えたことを特徴とする試料移動装置。
- 請求項6の試料移動装置において、
前記試料ホルダを当該試料ホルダが挿入される方向に減衰振動するように駆動する駆動機構を備えたことを特徴とする試料移動装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/422,436 US20150243472A1 (en) | 2012-08-20 | 2013-06-26 | Electron Microscope and Sample Movement Device |
CN201380041012.2A CN104520964A (zh) | 2012-08-20 | 2013-06-26 | 电子显微镜以及试样移动装置 |
DE201311003621 DE112013003621T5 (de) | 2012-08-20 | 2013-06-26 | Elektronenmikroskop und Probenbewegungsvorrichtung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012181303A JP2014038786A (ja) | 2012-08-20 | 2012-08-20 | 荷電粒子線装置及び試料移動装置 |
JP2012-181303 | 2012-08-20 |
Publications (1)
Publication Number | Publication Date |
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WO2014030425A1 true WO2014030425A1 (ja) | 2014-02-27 |
Family
ID=50149742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/067430 WO2014030425A1 (ja) | 2012-08-20 | 2013-06-26 | 電子顕微鏡及び試料移動装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20150243472A1 (ja) |
JP (1) | JP2014038786A (ja) |
CN (1) | CN104520964A (ja) |
DE (1) | DE112013003621T5 (ja) |
WO (1) | WO2014030425A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112289668A (zh) * | 2020-09-28 | 2021-01-29 | 北京中科科仪股份有限公司 | 一种电镜探测器的驱动机构及电镜探测器装置 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6286146B2 (ja) * | 2013-07-24 | 2018-02-28 | 株式会社日立ハイテクノロジーズ | 荷電粒子線装置 |
JP6490920B2 (ja) * | 2014-08-08 | 2019-03-27 | 株式会社日立ハイテクノロジーズ | 荷電粒子装置および試料ホルダ |
JP6421041B2 (ja) | 2015-01-13 | 2018-11-07 | 株式会社日立ハイテクノロジーズ | 荷電粒子線装置 |
CN106910665B (zh) * | 2017-03-01 | 2019-07-12 | 聚束科技(北京)有限公司 | 一种全自动化的扫描电子显微镜及其探测方法 |
JP6872429B2 (ja) * | 2017-06-07 | 2021-05-19 | 株式会社日立ハイテク | 荷電粒子線装置 |
US10520527B2 (en) * | 2017-12-15 | 2019-12-31 | The Regents Of The University Of California | Miniature device for ultra high sensitivity and stability probing in vacuum |
NL2020235B1 (en) * | 2018-01-05 | 2019-07-12 | Hennyz B V | Vacuum transfer assembly |
US11164717B2 (en) * | 2018-03-23 | 2021-11-02 | Hitachi High-Tech Corporation | Electron microscope |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS6298545A (ja) * | 1985-10-25 | 1987-05-08 | Hitachi Ltd | 透過形電子顕微鏡の試料微動装置 |
JPH08124508A (ja) * | 1994-10-20 | 1996-05-17 | Jeol Ltd | 電子顕微鏡用試料保持装置 |
JP2012151028A (ja) * | 2011-01-20 | 2012-08-09 | Jeol Ltd | 荷電粒子線装置の試料位置決め装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS54136171A (en) * | 1978-04-14 | 1979-10-23 | Hitachi Ltd | Frozen sample breaking device for scanning electron microscope |
JPS6054151A (ja) * | 1983-09-02 | 1985-03-28 | Internatl Precision Inc | 電子線装置の試料移動装置 |
JP5274952B2 (ja) * | 2008-09-18 | 2013-08-28 | 日本電子株式会社 | 真空シール方法及び真空装置 |
WO2013022626A1 (en) * | 2011-08-05 | 2013-02-14 | E.A. Fischione Instruments, Inc. | Improved cryogenic specimen holder |
-
2012
- 2012-08-20 JP JP2012181303A patent/JP2014038786A/ja active Pending
-
2013
- 2013-06-26 WO PCT/JP2013/067430 patent/WO2014030425A1/ja active Application Filing
- 2013-06-26 CN CN201380041012.2A patent/CN104520964A/zh active Pending
- 2013-06-26 DE DE201311003621 patent/DE112013003621T5/de not_active Withdrawn
- 2013-06-26 US US14/422,436 patent/US20150243472A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6298545A (ja) * | 1985-10-25 | 1987-05-08 | Hitachi Ltd | 透過形電子顕微鏡の試料微動装置 |
JPH08124508A (ja) * | 1994-10-20 | 1996-05-17 | Jeol Ltd | 電子顕微鏡用試料保持装置 |
JP2012151028A (ja) * | 2011-01-20 | 2012-08-09 | Jeol Ltd | 荷電粒子線装置の試料位置決め装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112289668A (zh) * | 2020-09-28 | 2021-01-29 | 北京中科科仪股份有限公司 | 一种电镜探测器的驱动机构及电镜探测器装置 |
Also Published As
Publication number | Publication date |
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CN104520964A (zh) | 2015-04-15 |
JP2014038786A (ja) | 2014-02-27 |
US20150243472A1 (en) | 2015-08-27 |
DE112013003621T5 (de) | 2015-04-23 |
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